Idea I had for a Glee anniversary

For the 15th anniversary next year, I think instead of a full reboot they should do a reunion concert special on TV, whether that's live or pre-taped. I think they could get a majority of the cast this way, and it could be a fun way to bring back guest stars or other celebrity guests. They could work in tributes to Naya and Cory as well. I'm not sure what songs I want included but I think every season should have some representation. I think if they wanted to, doing little skits in between the songs in character could be fun, but I don't want it to be a real story, or contribute to any canon.